One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Chino Hills you can determine when it's the best time to plant oriental poppies by using the USDA zone info.

Planting Calendar for Oriental poppies

Frost tolerance for oriental poppies:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Oriental poppies do ok in a little bit of cold which means that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant oriental poppies in Chino Hills is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant oriental poppies and expect a good harvest is probably October. If you wait any later than that and your oriental poppies may not have a chance to fully mature. Starting your oriental poppies indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Chino Hills. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Chino Hills is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Chino Hills you get a frost after January 31 be ready to cover your oriental poppies in the event of a late frost.

USDA Zone Info for Chino Hills

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Chino Hills

You may be interested in your other planting guides for Chino Hills.